TETRAONID^ — THE GROUSE. 
109 
JJJJ Subgenus CANACE, Reichenbach. (Page 108.) JJJJ 
C. canadensis. Above distinctly barred with plumbeous and black ; beneath 
black, with a white border to the throat, a white pectoral band, and white 
markings on the sides. Female barred with ochraceous, gray and black 
above, and with orange-ochraceous and black on the lower parts. Length, 
about 16.25; wing, 7.00; tail, 5.50. Eggs ochrey-cream color, coarsely 
blotched with chestnut-brown, about 1.75 by 1.20. 
Tail rounded, tipped with rufous ; upper tail-coverts tipped narrowly 
with deep ash. Hab. British America, east of the Rocky Mountains, 
from Alaska (Yukon region) to northern border of United States. 
( Canada Grouse; Spruce Partridge.) .... var. canadensis , 
Tail nearly even, black to the tip, or else with a narrow white termi- 
nal bar ; upper tail-coverts broadly tipped with pure white. Hab. 
Northern Rocky Mountains to the Pacific coast. {Franklin's Grouse.) 
var. franklini. 
JJJJ Subgenus DENDRAGrAPUS, Elliot. (Page 108.) 
C. obscurus. Above nearly uniform plumbeous-dusky, minutely mottled 
on the wings. Tail uniform black, with or without a lighter terminal band, ■/&. 
and sometimes finely and obscurely mottled above. Lower parts nearly 
uniform clear plumbeous, or blackish-dusky; a dusky half-collar on the iff;, 
throat; chin and throat white, variegated with dusky. Length, about > > 
20.50 ; wing, 9.40 ; tail, 7.45. Female smaller, the colors more variegated, H|. 
with the dusky less continuous, and less in amount. Eggs pale cream-color, 
rather finely marked with small rounded spots of reddish-brown, most J 
decided towards larger end. 
A. Tail rounded, with a distinct terminal band of clear plumbeous. 
Above brownish-ashy, minutely mottled (transversely) with dusky 
and, to a less extent, with yellowish-brown. Beneath fine pure ashy. A 
Hab. Sierra Nevada (from Fort Crook southwards) and Rocky 
Mountains, from the Hellgate region to New Mexico. Eggs about 
1.95 by 1,45. ( Dusky Grouse ; Blue Grouse.) . . var. obscurus 
Above brownish-black, minutely and sparsely mottled with 
slate and rusty-brown. Beneath dark plumbeous. (In northern 
specimens, especially in females from Sitka, much washed with 
dark castaneous-rusty.) Hab. Northwest coast mountains, from 
Oregon to Sitka. ( Sooty Grouse.) . . . var . fuliginosus 
B. Tail nearly even, and without any terminal lighter band, or else having it 
badly defined. 
Colors, in other respects, of var. obscurus , but cheeks, etc., less 
dusky. Hab. Rocky Mountains of British America, south to the 
Yellowstone and Hellgate region of United States (where grading 
into var. obscurus .) Eggs smaller than in var. obscurus , about 
1.75 by 1.35. {Richardson' s Grouse.) , . . var . richardsoni 
$T$r- 
™ Genus CENTROCERCUS, Swainson. (Page 108.) JJJJ 
C. urophasianus. Tail-feathers twenty. Above varied with black, grayish-brown, 
and brownish-yellow ; coverts having all the feathers streaked with the latter. Beneath 
black ; the breast white ; the upper feathers with spiny shafts ; the lower streaked with 
